Rodenstock HR Digital Cicular Polarizer Filter Super MC 77mm

The Rodenstock HR Digital Circular Polarisation Filters
Light which falls on electrically insulating surfaces, e.g. glass, plastic,
glossy lacquer or water*, at an angle (not perpendiculer) is polarized by
reflection to an extent that depends on the angle of incidence. Consequently,
its waves do not oscillate in all directions, but mainly or exclusively on a
“polarization plane”. Therefore polarizing filters or shorter polarizers permit
weakening, complete elimination, but also enhancing of reflections. A blue sky
can be colored more intensively and the color saturation of landscapes can be
enhanced by eliminating the bluish veil. The effect of these filters cannot be
replaced by a digital imaging software at a later date.